Quantity 1 | Quantity 2 | Spearman's correlation | p-value |
ΔSGRQ | Δ6MWT | -0.2436 | 0.1298 |
ΔSGRQ | ΔFVC | -0.2417 | 0.1329 |
ΔSGRQ | ΔUpper lobe | 0.1659 | 0.305 |
ΔSGRQ | ΔNonupper lobe | -0.3809 | 0.0159 |
ΔSGRQ | ΔFEV1 | -0.2245 | 0.1637 |
Δ6MWT | ΔFVC | 0.4783 | 0.0018 |
Δ6MWT | ΔUpper lobe | -0.3316 | 0.0366 |
Δ6MWT | ΔNonupper lobe | 0.2991 | 0.0608 |
Δ6MWT | ΔFEV1 | 0.2734 | 0.0878 |
ΔFVC | ΔUpper lobe | -0.3105 | 0.0512 |
ΔFVC | ΔNonupper lobe | 0.3049 | 0.0557 |
ΔUpper lobe | ΔNonupper lobe | -0.473 | 0.0023 |
ΔUpper lobe | ΔFEV1 | -0.449 | 0.0037 |
ΔNonupper lobe | ΔFEV1 | 0.3709 | 0.0185 |
SGRQ: St George’s Respiratory Questionnaire; FVC: forced vital capacity; FEV1: forced expiratory volume in one second. Percentage changes were used for the quantitative computed tomography measures, and absolute change for the other measures in these analyses.